Check out the first trailer for The Gambler above to witness Mark Wahlberg's extremely gaunt appearance after losing a whopping 27 kg.

According to USA Today, the 43-year-old star went on a medically supervised diet to go from 89 kg to just 62 kg, in order to play a down-and-out gambling addict in the upcoming flick.

"I was on a liquid diet for about a month under the watchful eye of doctors," he told News.com.au in June. "I continued to lose weight during the shoot but I was relieved when it was over and I could start eating again.

"It's a lot easier to gain it than it is to lose it."

In this remake of 1974's The Gambler, Mark plays Jim, a high roller and English professor who, in an act of desperation, offers his own life as collateral during a big gambling bet.

Jessica Lange (American Horror Story), Brie Larson (21 Jump Street) and John Goodman (The Big Lebowski) also star in The Gambler, hitting Australian cinemas on March 5, 2015.

Check out the trailer above to witness Jared and Matt's terrifying transformations, then check out our slideshow to see more actors who starved for movie roles below...